meteor-update-app-settings.sh

#!/bin/bash -
#===============================================================================
#
#          FILE: meteor-update-nginx-app-settings.sh
#
#         USAGE: meteor-update-nginx-app-settings.sh -u username -h host -s <settings>.json [-f] [-v]
#                meteor-update-nginx-app-settings.sh --user username --host host --settings <settings>.json [--force] [--verbose]
#
#   DESCRIPTION: This script will replace (or create) the virtual host file in
#                 Nginx's sites-available folder, using the settings file passed
#                 from the command line.
#       OPTIONS:
#                -f | --force
#                   Passing the force flag will suppress the prompt to restart
#                     nginx and just do it.
#                -h | --host
#                   The fully qualified domain name of the virtual host.
#                -s | --settings
#                   Location of your app's JSON settings file, which will then
#                     be inserted into the Nginx configuration file.
#                -u | --user
#                   The name of the system account the host will be attributed to.
#                -v | --verbose
#                   If passed, will show all commands executed.
#  REQUIREMENTS: Nginx, Passenger, Node 0.10.40 managed by N, Mongo, ~/www/,
#                 /etc/nginx/sites-available/, /etc/nginx/sites-enabled/,
#                 /var/www/, sudo privileges.
#          BUGS: ---
#         NOTES: ---
#        AUTHOR: Jason White (Jason@iDoAWS.com),
#  ORGANIZATION: @iDoAWS
#       CREATED: 04/15/2016 15:33
#      REVISION:  001
#          TODO: Add -S option to enable commented lines and do SSL work
#===============================================================================

# Strict mode
set -euo pipefail
IFS=$'\n\t'

# Check for arguments or provide help
if [ $# -eq 0 ] ; then
  echo "Usage:"
  echo "  `basename $0` -u user -h host [-s <settings>.json] [-f] [-v]"
  echo "  `basename $0` --user user --host host [--settings <settings>.json] [--force] [--verbose]"
  echo "This should be run on your staging or production server."
  exit 0
fi

# Parse command line arguments into variables
while :
do
    case ${1:-} in
      -f | --force)
    FORCE=true
    shift 1
    ;;
      -h | --host)
    HOST="$2"
    shift 2
    ;;
      -s | --settings)
    SETTINGS_FILE="$2"
    shift 2
    ;;
      -S | --ssl)
    SSL=true
    shift 1
    ;;
      -u | --user)
    USERNAME="$2"
    shift 2
    ;;
      -v | --verbose)
    VERBOSE=true
    shift 1
    ;;
      -*)
    echo "Error: Unknown option: $1" >&2
    exit 1
    ;;
      *)  # No more options
    break
    ;;
    esac
done

# Validate arguments
if [ ! -v USERNAME ] ; then
  echo 'User name is required.'
  exit 1
fi
if [ ! -v HOST ] ; then
  echo 'Host name is required.'
  exit 1
fi
if [[ -v SETTINGS_FILE && -f $SETTINGS_FILE ]] ; then
  SETTINGS=`cat $SETTINGS_FILE | tr -d '\n'`
  SETTINGS=${SETTINGS//\'/\\\'}
else
  echo "Settings file $SETTINGS_FILE not found."
  exit 1
fi

# Check verbosity
if [ -v VERBOSE ] ; then
  set -v
fi

# Create new /etc/nginx/sites-available/$HOST.conf
echo "server {
    server_name $HOST;
    root /var/www/$USERNAME/bundle/public;

    listen 80;
    # listen 443 ssl;

    passenger_enabled on;
    passenger_app_type node;
    passenger_startup_file main.js;
    passenger_nodejs /usr/local/n/versions/node/0.10.43/bin/node;
    passenger_sticky_sessions on;

    # ssl_certificate      /etc/ssl/$HOST.crt;
    # ssl_certificate_key  /etc/ssl/$HOST.key;

    passenger_env_var MONGO_URL mongodb://localhost:27017/$USERNAME;
    passenger_env_var ROOT_URL http://$HOST;
    passenger_env_var METEOR_SETTINGS '$SETTINGS';

}" | sudo tee /etc/nginx/sites-available/$HOST.conf

# End
echo "Virtual host updated.  Nginx will need to be restarted in order to take effect."
if [ -v FORCE ] ; then
    sudo service nginx restart
else
  read -p "Would you like me to restart Nginx for you? [y/N] " -n 1 -r REPLY
  echo ""
  if [[ $REPLY =~ ^[Yy]$ ]] ; then
    sudo service nginx restart
  fi
fi
exit 0